/*
 * Copyright 2002-2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package org.springframework.security.web.util.matcher;

import java.util.Arrays;
import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.security.web.util.matcher.RequestMatcher;
import org.springframework.util.Assert;


/**
 * {@link RequestMatcher} that will return true if all of the passed in
 * {@link RequestMatcher} instances match.
 *
 * @author Rob Winch
 * @since 3.2
 */
public final class AndRequestMatcher implements RequestMatcher {
    private final Log logger = LogFactory.getLog(getClass());

    private final List<RequestMatcher> requestMatchers;

    /**
     * Creates a new instance
     *
     * @param requestMatchers the {@link RequestMatcher} instances to try
     */
    public AndRequestMatcher(List<RequestMatcher> requestMatchers) {
        Assert.notEmpty(requestMatchers, "requestMatchers must contain a value");
        if(requestMatchers.contains(null)) {
            throw new IllegalArgumentException("requestMatchers cannot contain null values");
        }
        this.requestMatchers = requestMatchers;
    }

    /**
     * Creates a new instance
     *
     * @param requestMatchers the {@link RequestMatcher} instances to try
     */
    public AndRequestMatcher(RequestMatcher... requestMatchers) {
        this(Arrays.asList(requestMatchers));
    }

    public boolean matches(HttpServletRequest request) {
        for(RequestMatcher matcher : requestMatchers) {
            if(logger.isDebugEnabled()) {
                logger.debug("Trying to match using " + matcher);
            }
            if(!matcher.matches(request)) {
                logger.debug("Did not match");
                return false;
            }
        }
        logger.debug("All requestMatchers returned true");
        return true;
    }

    @Override
    public String toString() {
        return "AndRequestMatcher [requestMatchers=" + requestMatchers + "]";
    }
}